World's Best Scientists 2026 revealed!
Atsushi Ochiai

Atsushi Ochiai

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Medicine
Japan
2023

D-Index & Metrics

Medicine

D-Index
109
Citations
44370
World Ranking
5774
National Ranking
130

Atsushi Ochiai publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Atsushi Ochiai sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 756 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Atsushi Ochiai D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Atsushi Ochiai sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 109 D-Index — 72nd percentile

72% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Research.com Recognitions

  • 2023 - Research.com Medicine in Japan Leader Award

Overview

Atsushi Ochiai is affiliated with the University of Tokyo in Japan and has a substantial research output in the fields of medicine and biochemistry, genetics, and molecular biology. Their work primarily focuses on oncology, pulmonary and respiratory medicine, and surgery, with notable contributions to cancer research and molecular biology.

The scientist's studies cover a variety of specialized topics, including:

  • Cancer Immunotherapy and Biomarkers
  • Pancreatic and Hepatic Oncology Research
  • Gastric Cancer Management and Outcomes
  • Cancer Cells and Metastasis
  • Cancer Genomics and Diagnostics
  • Colorectal Cancer Screening and Detection
  • Radiomics and Machine Learning in Medical Imaging

Atsushi Ochiai has frequently published in several scientific venues, with multiple contributions in:

  • Cancer Research
  • Cancer Science
  • Lung Cancer
  • Scientific Reports
  • Pathology International

Their collaborative network includes several frequently co-authored researchers such as Genichiro Ishii, Takeshi Kuwata, Shuichi Mitsunaga, Motohiro Kojima, and Masafumi Ikeda.

Representative recent papers highlight the breadth of Ochiai's investigation and include:

  • "Relationship between podoplanin-expressing cancer-associated fibroblasts and the immune microenvironment of early lung squamous cell carcinoma" (2020, Lung Cancer)
  • "Baseline ctDNA gene alterations as a biomarker of survival after panitumumab and chemotherapy in metastatic colorectal cancer" (2024, Nature Medicine)
  • "The Japanese Society of Pathology Practical Guidelines on the handling of pathological tissue samples for cancer genomic medicine" (2021, Pathology International)
  • "Long-term outcome of endoscopic resection for intramucosal esophageal squamous cell cancer: a secondary analysis of the Japan Esophageal Cohort study" (2020, Endoscopy)
  • "Identification and Therapeutic Targeting of GPR20, Selectively Expressed in Gastrointestinal Stromal Tumors, with DS-6157a, a First-in-Class Antibody-Drug Conjugate" (2021, Cancer Discovery)

Best Publications

  • Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines 2010 for the treatment of colorectal cancer

    Toshiaki Watanabe;Michio Itabashi;Yasuhiro Shimada;Shinji Tanaka

  • Assessment of a HER2 scoring system for gastric cancer: results from a validation study.

    M Hofmann;O Stoss;D Shi;R Büttner

  • Quantitative Metabolome Profiling of Colon and Stomach Cancer Microenvironment by Capillary Electrophoresis Time-of-Flight Mass Spectrometry

    Akiyoshi Hirayama;Kenjiro Kami;Masahiro Sugimoto;Maki Sugawara

  • Early Detection of Superficial Squamous Cell Carcinoma in the Head and Neck Region and Esophagus by Narrow Band Imaging: A Multicenter Randomized Controlled Trial

    Manabu Muto;Keiko Minashi;Tomonori Yano;Yutaka Saito

  • Silencing of the E-cadherin invasion-suppressor gene by CpG methylation in human carcinomas.

    Kenta Yoshiura;Yae Kanai;Atsushi Ochiai;Yutaka Shimoyama

  • Japanese Society for Cancer of the Colon and Rectum (JSCCR) Guidelines 2014 for treatment of colorectal cancer

    Toshiaki Watanabe;Michio Itabashi;Yasuhiro Shimada;Shinji Tanaka

  • Expression of Epidermal Growth Factor Receptor in Human Gastric and Colonic Carcinomas

    Wataru Yasui;Hiromichi Sumiyoshi;Jotaro Hata;Takashi Kameda

  • Predominant infiltration of macrophages and CD8(+) T Cells in cancer nests is a significant predictor of survival in stage IV nonsmall cell lung cancer.

    Osamu Kawai;Genichiro Ishii;Kaoru Kubota;Yukinori Murata

  • Phenotypic and functional heterogeneity of cancer-associated fibroblast within the tumor microenvironment.

    Genichiro Ishii;Atsushi Ochiai;Shinya Neri

  • Size control of calcium alginate beads containing living cells using micro-nozzle array

    Shinji Sugiura;Tatsuya Oda;Tatsuya Oda;Yasuhiko Izumida;Yasuyuki Aoyagi

  • Autophagy is activated in colorectal cancer cells and contributes to the tolerance to nutrient deprivation.

    Kazunori Sato;Katsuya Tsuchihara;Satoshi Fujii;Masanori Sugiyama

  • Risk factors for lymph node metastasis from intramucosal gastric carcinoma.

    Takekazu Yamao;Kuniaki Shirao;Hiroyuki Ono;Hitoshi Kondo

  • A Truncated β-Catenin Disrupts the Interaction between E-Cadherin and α-Catenin: A Cause of Loss of Intercellular Adhesiveness in Human Cancer Cell Lines

    Tsukasa Oyama;Yae Kanai;Atsushi Ochiai;Shingo Akimoto

  • Bone-marrow-derived myofibroblasts contribute to the cancer-induced stromal reaction.

    Genichiro Ishii;Takafumi Sangai;Tatsuya Oda;Yasuyuki Aoyagi

  • Autophagy is activated in pancreatic cancer cells and correlates with poor patient outcome

    Satoshi Fujii;Shuichi Mitsunaga;Manabu Yamazaki;Takahiro Hasebe

  • Transactivation of the multidrug resistance 1 gene by T-cell factor 4/beta-catenin complex in early colorectal carcinogenesis.

    Tesshi Yamada;Asako S. Takaoka;Yasuyoshi Naishiro;Reiko Hayashi

  • Stromal MCP-1 in mammary tumors induces tumor-associated macrophage infiltration and contributes to tumor progression

    Hiroshi Fujimoto;Takafumi Sangai;Genichiro Ishii;Akashi Ikehara

  • The E-cadherin gene is silenced by CpG methylation in human hepatocellular carcinomas

    Yae Kanai;Saori Ushijima;Ai Min Hui;Atsushi Ochiai

  • Breast cancer resistance protein impacts clinical outcome in platinum-based chemotherapy for advanced non-small cell lung cancer.

    Kiyotaka Yoh;Genichiro Ishii;Tomoyuki Yokose;Yuji Minegishi

  • Comparison of HER2 gene amplification assessed by fluorescence in situ hybridization and HER2 protein expression assessed by immunohistochemistry in gastric cancer.

    Tomonori Yano;Toshihiko Doi;Atsushi Ohtsu;Narikazu Boku

Frequent Co-Authors

Kanji Nagai
Kanji Nagai Kitasato University
Atsushi Ohtsu
Atsushi Ohtsu Juntendo University
Takayuki Yoshino
Takayuki Yoshino University of Tsukuba
Yutaka Nishiwaki
Yutaka Nishiwaki Tokyo Medical University
Setsuo Hirohashi
Setsuo Hirohashi National Cancer Research Institute, UK
Hiroyasu Esumi
Hiroyasu Esumi Tokyo University of Science
Toshihiko Doi
Toshihiko Doi Okayama University
Kohei Shitara
Kohei Shitara Yahoo (United Kingdom)
Yuichiro Ohe
Yuichiro Ohe National Cancer Centre
Masaaki Ito
Masaaki Ito Mie University

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